Does every bay need its own automotive tool case?

Answer: At twelve bays and five units each that is 60 sets. Sharing lengthens the walk and adds 6 minutes to a service order.

Answer: PP where brake cleaner is in daily use, since it holds gloss for 500 hours at pH 12; ABS suits routine servicing.

Is a 25 kg rating enough?

Answer: With a 4.2 kg shell the all-up weight nears 30 kg, the practical limit for one person; above that, use a wheeled unit.

How thick should the shadow board be?

Answer: 30 mm, cut 2 to 3 mm shallower than the tool so the lid compresses it; below 20 mm a socket punches through.

Must the code be six digits?

Answer: Two for zone, two for bay, two for sequence covers a twelve-bay shop for a decade; beyond 99 bays, widen the zone field.

Automotive Tool Case: Standardising 4S Dealership Tool Carts

Quick answer: Standardising an automotive tool case comes down to three rules rather than one supplier: a set count per bay, a colour plus six-digit code that fixes ownership, and a 20-pick threshold that decides what stays in a drawer and what travels in a case.

Where an automotive tool case fits in a 4S bay
Colour and numbering per bay
PP against ABS under workshop cleaners
Drawers against cases
Load, castors and stacking
Counting, traceability and 5S
FAQ

1. Where an automotive tool case fits in a 4S bay

A bay holds tools in three layers: cart drawers, an on-board box, and a case that leaves the building. The automotive tool case is that third layer, lifted off the cart and loaded into a service van. Twelve bays at five units each come to 60 sets, and until that number is fixed nothing standardises.

Unit	Stored at	Pieces	Picks
General	Cart top	28 to 35	20+ a shift
Diagnostic	Bay shelf	6 to 9	4 to 6 a day
Tyre	Lift side	8 to 12	2 to 3 a day
Roadside	Van bay	16 to 22	1 to 2 a week
Special	Parts store	4 to 8	1 to 3 a month

The boundary matters more than the moulding. One set covers about 80 percent of routine servicing and 60 percent of strip-down work, the remaining 20 percent drawn from special-tool stock against a job card. Vague boundaries end with twenty sets ordered.

2. Colour and numbering per bay

Colour goes to the team, not the bay. Five teams take five colours through bumpers or latches rather than paint, which lifts within 3 months beside a lift. Numbering runs six digits: two for zone, two for bay, two for sequence.

Labels sit on the lid face, upper left, at 6 mm character height, 10 mm clear of the handle. Keep the padlock eyelet: strict tool control runs a 4 mm wire lock through it and the cart rail.

Automotive tool case side detail, textured black wall and recessed handle filling the frame, latch seam and padlock eyelet

Colour settles ownership, the code settles traceability.

3. PP against ABS under workshop cleaners

Workshop cleaners run alkaline at pH 11 to 12, and brake cleaner carries acetone and toluene. PP shrugs off both; ABS whitens within 30 minutes of ketone contact and shows hairline cracks after about 100 wipes. At the same 3 mm wall, a PP case takes 500 hours before it loses gloss, a resin difference rather than a thickness one.

Medium	PP	ABS	Verdict
Alkaline, pH 12	Stable	Slight gloss loss	Either
Brake cleaner	Stable	Whitens in 30 min	PP only
Engine oil	Stable	Stable	Wipe clean
Petrol	Slight swell	Clear swell	No residue

PP holds notched impact near 6 kJ/m² at −10 °C while ABS falls to 3 kJ/m², so a winter drop from a tailgate cracks ABS inside the bumper more often. Residue counts too: where a rib ends square, 2 to 3 ml of cleaner pools and turns tacky within a week, so an R2 radius pays for itself.

4. Drawers against cases

Drawers take high-frequency items and cases take the rest, split at 20 picks a shift against 2 a week. A seven-drawer cart with a 900 × 600 mm top runs 35 kg slides, and a full drawer pulls hard enough that the technician works off the top instead.

Automotive tool case open, red moulded tray with two rows of sockets, a ratchet and extensions in the centre channel

The automotive tool case covers a different leg of the job: out of the cart, across the floor, into the van, then to the roadside. A 30 mm EVA shadow board gives every tool one pocket, so a gap reads at a glance. At 4.2 kg empty and 25 kg loaded it stays a one-person lift; past 30 kg it needs wheels.

Two patterns appear where the split is unclear. Load everything into cases and the unit reaches 38 kg, nobody carries it, and it stays in the van. Load everything into drawers and the cart will not fit under a lift, adding 6 minutes to a service order. Cutting at 20 picks leaves cases holding 30 to 40 percent of the tools at 22 to 28 kg.

5. Load, castors and stacking

A 25 to 40 kg rating covers contents plus the case. A moulded body with a 3 mm wall and four base ribs may show 2 mm of corner set after two 1.2 m drops. Stacked four high, the bottom unit carries 160 kg, so pallet beams sit no more than 600 mm apart.

Castors run 100 mm, two fixed and two swivel, at 120 kg dynamic and 300 kg static; on an oily floor the swivel pair needs brakes.

Item	Criterion	Interval
Latch effort	80 to 110 N	Quarterly
Handle	No set at 25 kg	Twice a year
Castors	Under 2 mm wear	Quarterly
Base	Under 2 mm set	Monthly

6. Counting, traceability and 5S

Checks run at two levels: 15 minutes on Friday against the shadow board, 45 minutes a month against the numbering. A missing item is traced within 48 hours through three routes: the sign-out sheet, camera coverage, loans between bays.

5S lands as four actions: sort clears anything untouched for six months, set-in-order is the shadow board plus numbering, shine is a wipe a shift, and standardise writes the first three into the handover sheet.

An automotive tool case set lasts about 4 years, with latches cycling around 10,000 times. Gaskets and handles age first from year three, and replacing them costs roughly 40 percent of a new case.

Conclusion

Standardising an automotive tool case comes down to numbers a manager can check: five units per bay and 60 sets, five colours with six-digit codes, and a 20-pick line between drawers and cases. Below that sit the figures on an acceptance sheet: 3 mm wall, 25 to 40 kg rating, 100 mm castors, 80 to 110 N latch effort, each one checkable on arrival.

This article discusses only the container (case body) side of specifications and design intent, and does not cover any handling, loading or use of the contents.